/****************************************************************************
 *
 * Copyright 2016 Samsung Electronics All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 *
 ****************************************************************************/
/****************************************************************************
 * arch/arm/src/common/up_vfork.h
 *
 *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

#ifndef __ARCH_ARM_SRC_ARM_VFORK_H
#define __ARCH_ARM_SRC_ARM_VFORK_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <tinyara/config.h>

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

#define VFORK_R4_OFFSET  (0*4)	/* Volatile register r4 */
#define VFORK_R5_OFFSET  (1*4)	/* Volatile register r5 */
#define VFORK_R6_OFFSET  (2*4)	/* Volatile register r6 */
#define VFORK_R7_OFFSET  (3*4)	/* Volatile register r7 */
#define VFORK_R8_OFFSET  (4*4)	/* Volatile register r8 */
#define VFORK_R9_OFFSET  (5*4)	/* Volatile register r9 */
#define VFORK_R10_OFFSET (6*4)	/* Volatile register r10 */

#define VFORK_FP_OFFSET  (7*4)	/* Frame pointer */
#define VFORK_SP_OFFSET  (8*4)	/* Stack pointer */
#define VFORK_LR_OFFSET  (9*4)	/* Return address */

#define VFORK_SIZEOF     (10*4)

/****************************************************************************
 * Public Types
 ****************************************************************************/

#ifndef __ASSEMBLY__
struct vfork_s {
	/* CPU registers */

	uint32_t r4;				/* Volatile register r4 */
	uint32_t r5;				/* Volatile register r5 */
	uint32_t r6;				/* Volatile register r6 */
	uint32_t r7;				/* Volatile register r7 */
	uint32_t r8;				/* Volatile register r8 */
	uint32_t r9;				/* Volatile register r9 */
	uint32_t r10;				/* Volatile register r10 */

	uint32_t fp;				/* Frame pointer */
	uint32_t sp;				/* Stack pointer */
	uint32_t lr;				/* Return address */

	/* Floating point registers (not yet) */
};
#endif

#endif							/* __ARCH_ARM_SRC_ARM_VFORK_H */
